THE KANSAS UNIVERSITY 

 SCIENCE BULLETIN. 



Vol. VIII, No. 10] JULY, 1913. [vorx^fi!^Nrio. 



Anatomy of Simulium vittatum. 



BY H. B. HUNGERFORD. 



(Submitted in partial fulfillment of the lequii'ements for the degree of master of arts.) 



Plates XLIII-XLV. 



Acknowledgments. 



THE preparation of this paper was undertaken in connec- 

 tion with the experimental work upon the sand fly and 

 pellagra being carried on by Professor Hunter of the Uni- 

 versity of Kansas. 



The anatomical studies were taken up at the suggestion of 

 Professor Hunter, and the writer desires herewith to express 

 his appreciation to him for his kindly interest and helpful sug- 

 gestions during the progress of the work. 



He also wishes to acknowledge the aid given him by Mr. 

 F. X. Williams in reviewing and correcting the manuscript, 

 by Miss Ruby Hosford in loaning material for sectional study, 

 and by Mr. W. T. Emery in collecting and preserving material 

 for the work. 



ANATOMY OF SIMULIUM VITTATUM. 



Introduction. 



The recent widespread interest in the sand fly as the possible 



carrier of the disease "pellagra" has given the writer a desire 



to know something of the anatomy and histology of the form 



common in Kansas', nainely Simulium vittatuui. 



The study of the gross structures of Simuliuut has been of 

 some scientific interest aside from its possible connection with 

 pellagra, for, so far as the writer has been able to find, no 



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